Neal Adams' cover art for 'Superman vs. Muhammad Ali,' published by DC Comics in 1978. The wraparound cover features many celebrities from the late 1970s, including the Beatles, Cher and Johnny Carson.

Neal Adams' cover art for 'Superman vs. Muhammad Ali,' published by DC Comics in 1978. The wraparound cover features many celebrities from the late 1970s, including the Beatles, Cher and Johnny Carson.